#1283960 by dereine: Add a override-selector on adding-item form, so you can choose whether you want to add to master or current display

#402944 by catch, msonnabaum, mikeytown2, drewish: Cache the calls to unpack_options both as static and in the database. This will speed up quite some sites

'#1333110 by sammyd56: Fix the description of the hide if empty checkbox. This was probably a leftover from first versions of the initial patch

#1324580 by pcramba, dereine: Build the arguments first, so the default arguments exist on validate plugins

#1298368 by zhgenti: Javascript settings caching didn't worked because settings expect not a aggregated array